Fontarnauite

Fontarnauite is a relatively recently described, rare sulfate, borate mineral with the chemical formula (Na,K)
2
(Sr,Ca)(SO
4
)[B
5
O
8
(OH)]·2H2O
. It is found in an evaporite boron deposit. It coexists with other evaporite boron minerals, especially probertite. It is monoclinic, crystallizing in the space group P21/c.[3][1]

Fontarnauite
Fontarnauite, Anatolia, West Turkey
General
CategoryBorate minerals
Formula
(repeating unit)
(Na,K)
2
(Sr,Ca)(SO
4
)[B
5
O
8
(OH)]·2H2O
Strunz classification6.DA.60
Crystal systemMonoclinic
Crystal classPrismatic (2/m)
(same H-M symbol)
Space groupP21/c
Identification
ColorLight brown
CleavagePerfect {010}
Mohs scale hardness2.5 - 3
References[1][2]

It was named for Ramon Fontarnau i Griera, a materials scientist of the University of Barcelona.[1]

References

  1. Mindat
  2. Mineralienatlas
  3. García-Veigas, J., Rosell, L., Alcobé, X., Subias, I., Ortí, F., Gündoğan, İ., and Helvaci, C., 2010. Fontarnauite, a New Sulphate-Borate Mineral from the Emet Borate District (Turkey). Revista de la Sociedad Española de Mineralogía 13, 97-98
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.